Adjustable handle-bar bracket.



S. E. PURDUM. ADJUSTABLE HANDLE BAR. BRACKET.

APPLICATION FILED 812F128, 1908. 921 Patented May 11, 1909.

UNITED STATES PArnr FFTQE.

SAMUEL E. PURDUM, OF MACQMB, ILLINOIS.

I ADJUSTABLE HANDLE-BAR BRACKET.

Specification of Letters Patent.

Patented May 1 1, 1909.

Application filed September 28, 1908. Serial No. 454,977. 7

v To all whom it may concern:

handle bar pivoted on the head of a bicycleon the usual handle bar postand ad apted to swing. in a plane passing longitudinally through-thebicycle frame and be fixed securely to said post in any positiondesired. The bracket adjustably carries in a clamp on its outer end ahandle bar capable of being in any dcsired'rrosition around the axis ofI said clamp.

With this and otherobjccts in view the invention consists of the novelconstruction, combination and arrangement of parts hereinafter describedand claimed, and illustrated in the accompanying drawing, in which: v

' "Figure 1 isa vertical longitudinal section through a portion of thehead of a bicycle, the adjustable bracket and the handle bar Fig. 2 atop plan view of the same partly in scctionyFig. 3 a perspective viewofthe forked end of the bracket; Fig. 4 a section on the line 4-l of Fig.2; and Fig. 5 a view of a modification. 7

Like reference characters are used for the same partsin all the figures.The preferred form of construction is shown in Figs. 1 to''of thedrawings wherein 1. indicates a portion of the tubular frame or top of abicycle, brazed to an inclined tube 2 that forms the bicycle head ofwell known construction. Within the head 2 is a steering post 3.Arranged within the steering post is a post 5, having longitudinal slots6 -The lower portion of the inner wall of the vpost?) is tapered toreceive a taperednnt 7 which when drawn upwardly by a bolt 8, 'causestheslotted end of the postto spread and bear against the steering post 3,so that vthe post can neither be withdrawn nor rotatcd. The upper cnd ofthe handle bar post, *5projectsabove the bicycle head 2 and is finishedwith a ring clamp 9 of well knowntype having a forwardly projectingcircular loop 10. Any other form of post 5 may be used instead ofthe onedescribed, such for instance as that representediii Fig. 5 wherein thepost is provided on its upper end with a loop or socket 10 permndicularto the post and in which socket the handle bar bracket n'iay swing andbe'fastened in position by an ordinary bolt 8 passing through thesidc ofthe socket] When the post shown in Fig. 5 is employed it may be fastenedin place in any suitable manner or it may form apart of the steeringpost proper, the construction shown being one that is well known inbicycles. v

The numeral 13 indicates the handle bar bracket which is forked at itsrear end to 'form two arms-14 and 15, separated from tioned, ispreferably madeof a se arate piece although it may be cast integra withthe bracket. rVhen made separately it is fastened between the arms 14and 15 by an axial bolt or screw 11 passing through the several parts.Theblock 16 is prevented from turning on the screw or bolt 11 by meansof a'serics of radial lugs 12, and notches 12 formed on the inner facesof the arms 14 and 15 interlocking with similar notches and lugs 12 onthe adjacent ends of the cylindrical block 16, as clearly indicated inFigs. 2 and 3, or a single lug 12 on each arm fitting one or morenotches in each end of the bearing may be substituted. If

desired, pins and holes may be substituted of the arms is not sullicientto hold these parts in contact when a strain is placed on the handlebars. As a further precaution againstraising the bracket 13, theexterior surface of the cylindrical block 16 is provided withlongitudinal ribs formed by grooving on its axis to any of the dottedline positions' indicated, or to any "position between thethe block fromend to end, whichribs tend to bite into the ring clamp 9 when the latteris tightened by the bolt 8. It the screw bolt 8 be loosened the post 5may be raised or lowered toany height desired. At the same vtime thehandle bar bracket 13 can be turned lowermost inner osition A and thelowermost outer posltion B by rotating the bracket upwardly. A furtheradjustment of. the handle bar 20 is provided for by fastenlng it intheringi clamp 17.

. It will be seen that the device forming the subject of the presentinvention is in the form of an attachment that may be applied a to anyordinary bicycle it being merely necessary'to remote'thehandle bar 20i'rom the v 1 ring clamp 10 where it is placed in the ordi 20 7 16 andattach the extension bracket 13, after naryqbicycle; to insert thecylindrical block which'thehandle bar 'may be placed in, the clam 17 ofthe latter. The b'racketlIi-may be a justed with the axis of the bolt L1as a center' of movement by merely loosening said belt or When the bolt8is loosened for the purpose of raisingor lewereing the post 5 thebracket 13 may be adjusted without the -"nece'ssity of loosening thebolt 11 and thisadjustment will save time as it is usually necessary ordesirable to change the adjustment of the'handle bar whenever the post 5is raised or lowered.

' is the only tool necessary to make every Every ad'ustment desired by abicycle rider is ma e ossible by the construction hereinabove escribedwhich is simple, strong and free of intricate parts. A wrench can bemade with rapidity.

What is claimed 1s:-

-forward en with a handle mounted between said arms, a bolt extendingthe arms and the inner face 0 mg provided with lnterengagmg members tothrong i the block to lock the parts'in a justed position, and a handlebar carryin' [clamp-disposed at the outer ends of sai J bracket. Intestimony that my own,I have hereto aflixed my signature in the presenceof two'witnesses.

, SAMUEL E. PURDUM.

WVitnesses:

' GEORGE M. WELLs,

O..PEAsL EY.

change of position desired and these changes '10 locl; them in relativeadjusted positions and with engaging members, a locking bolt ex tendmthroughthe arms and axialldy I claim the foregoing as 1. As anew articleof manufacture, a'handle bar sup orting bracket rov'ided atits ar clamp,the rear end of the bracket being bifurcated tov form a pair of arms",and a cylindrical block axially through the block and through theopenings in the arms, the adgacent ends'of the block be--

